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@ARTICLE{Tu:863600,
      author       = {Tu, Jhih-Sian and Borghardt, Sven and Grützmacher, Detlev
                      and Kardynal, Beata},
      title        = {{E}xperimental observation of a negative grey trion in an
                      electron-rich {WS}e 2 monolayer},
      journal      = {Journal of physics / Condensed matter},
      volume       = {31},
      number       = {41},
      issn         = {0953-8984},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2019-03612},
      pages        = {415701 -},
      year         = {2019},
      abstract     = {We measure the evolution of low temperature
                      photoluminescence in a WSe2 monolayer with increasing
                      electron concentration level. By comparing non-resonant and
                      resonant laser excitation, we find that the formation of
                      negative trions is facilitated by very efficient phonon
                      emission. The most prominent line in photolumienscence
                      spectra in the intermediate range of carrier concentrations
                      (below cm−2) is found to be 66 meV below the bright
                      negative trion. Its measured properties, including low
                      oscillator strength and the temperature dependence point to
                      an interacting bright intervalley and dark intervalley trion
                      state as the origin of the line.},
      cin          = {PGI-9},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31272091},
      UT           = {WOS:000476532400001},
      doi          = {10.1088/1361-648X/ab2f56},
      url          = {https://juser.fz-juelich.de/record/863600},
}